Automatic trip.



U. W. WALTON.

AUTOMATIC TRIP.

APPLICATION FILED rlxwlm, 1914.

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narran sfrars ra ULRICH W. WALTON, OF EATON, IOWA. v

AUTOMATIC TRIP.

Specification of Letters Patent.

Patented Oct. 27, 19141..

Application filed February 26, 1914. Serial No. 821,250.

To all 'whom z5 may concern."

Be it known that I, ULRIGH W. VVALTON, a citizen of the United States of America, residing at Paton, in the county of Greene and State of Iowa, have invented certain new and useful Improvements in Automatic Trips,of which the following is especification, reference being had 'therein to the accompanying drawing.

This invention relates to automatic trips for throwing the brakes of a train in case the same should run by a danger signal which has been set by means of the semaphore arm or other indicatingdevice.

Another object of this invention is the production of a simple and eilicient means for setting the trip simultaneously with the setting of a danger signal so as to be in proper position to engage the desired cutoftl adapted tobe carried by a locomotive in order that the brakes may be automatically operated in case a train or locomotive should pass a danger point.

With these and other objects in view this invention consists of certain novel combinations, constructions, and arrangements of parts as will be hereinafter fully described and claimed.

1n the accompanying drawings Figure 1 is a transverse sectional view through a track and the casing which supports the automatic trip. Fig. 2 is a detail perspective of the casing showing the trip applied thereto. Fig. 3 is a section taken on line 3-3, of Fig. 1. Fig. 4E is a section taken on line l-f1, of Fig. 1 looking in the direction of the arrow. Fig. 5 is an enlarged vertical section showing the manner of attaching the stop arm to the main trip supporting shaft. Fig. 6 is a detail perspective of the stop arm used in connection with the present device. Fig. 7 is a transverse sectional view through the sprocket wheel over which the operating sprocket chain is adapted to pass. Fig. 8 is an embodiment ofthe valve engaging blade showing the same provided with a means for permitting a light to constitute a signal therefor.

By referring to the drawings it will be seen that 1 designates the usual track upon which the locomotive or other vehicle`2 is The locomotive is adapted to carry a valve 3 which carries a p r'ojecting finger or lever 4f adapted to project beyond the side of the train. The valve 3 is carried preferably inthe rear of the pilot although the saine may be carried in any desired or convenient position upon the lo-` The present invention,

comotive or engine. however, deals more especially with the construction of the automatic trip per se and not with the construction of the valve or train pipe construction which may be made in any desired or convenient manner.

A casing vor receptacle 5 is preferably placed to one side of the track and beneath the road bed thereof as is illustrated clearly in Fig. 1. This casing or receptacle 5 is preferably .made water tight so as to prevent the entrance of moisture which would be likely to corrode or interfere with the working portions of the automatic trip. A. bearing block 6 is carried in the bottom of the receptacle or box 5 and within this bearing block 6 is journaled the reduced portion 7 of the operating shaft 8.

The operating shaft 8 is preferably square throughout the major'portion of its length and upon this square portion of the operating shaft 8 is placed' a sprocket wheel 9. rllhis sprocket wheel 9 is providedwith plurality of sprocket teeth 10 over which the sprocket chain 11 passes for the purpose of rotating the operatingv shaft 8 when it is so desired. This sprocket wheel 9, is provided with a circumferential flange 12 around the lower edge thereof, which flange extends beyond the sprocket teeth` 10 of the sprocket wheel 9 and constitutes a supporting ledge for the sprocket chain as is clearly illustrated in Figs. 1, 8 and 7; l Bymeans of the iiange 12 it will vbe seen that the chain 11 will be held in its correct position and will not be likely to become detached from the sprocket wheel by slipping from the sprocket teeth 10. The sprocket chain 11 is secured to a plurality of operating cables 13,w`hich cables may pass to the usual signal device for coperating with the semaphore arm or other signal for operating the chain 11 simultaneously with the operation or setting of the signal so as to cause the trip hereinafter described to be correctly set at the Sametime the signal is set in a danger position. 1t, of course, should be understood that the cables 13 may be passed through any desired form of conduit or means for conveying the cables to the dei sired point.

A removable cap or plate 14 is secured to` the top of the receptacle or box 5, and this cap supports a plurality of depending stop i lugs 15, which stop lugs are provided with v iirmly securing the stop lugs 1G. in engagement with the cover plate 14. The stop lugs are provided withw downwardly pro- `iecting ends 17, which downwardly projecting ends 17 constitute stops for engaging the stop arm 18', which stop arm is fitted upon the square portion of the operating shaft 8 so as to be swung as the' operating shaft 8 is rotated. Two of these stop lugs 15 are employedy so as to limit the swing of the arm 18 in each direction. @ne of the stop lugs 15 will limit the swinging movement of the arm 1S in one direction when the stop has been set to an operative position. rThe other stop lug 15 will constitute a stop for limiting the swing of the shaft or stop arm 18 in the opposite direction as illustrated in Figs. 1 and The stop arm 1S is provided with an enlarged head 19, which enlarged head is held against slidingmovement upon the shaft 8 by means of a thumb nut 20.

The operating shaft S is provided at its upper end with a rounded portion 21, which rounded portion 21` carries a valve engaging blade 22 extending at right angles to the shaft 8. This valve engaging blade 22 may be colored red upon one face thereof so as to constitute a signal in itself and indicate 15in that the stop is in a danger position. integralfcollar 23 is carried' by the rounded portion 21 of the operating shaft 8 and fits snugly over the upper end of the supporting i sleeve 21 so as rto Vprevent the entrance of moisture or water into the interior of the; casing or receptacle 5 by passing down wardly through theoperating shaft 8.

The sleeve 24 is provided with an enlarged flange portion 25 formed upon its lower end 'to constitute an eflicient bearing for engaging the cover plate 111 of the receptacle or box. rlfhis sleeve 241A will constitute efficient means for supporting .the signal or stop blade 22 in its correct vertical position and prevent thev signal or stop blade 22 from sagging. l

From theforegoing description it will be seen that -a very simple and efficient means has been produced for constitutingan automatic trip for throwing the brakes of a train in case a train should accidentally pass by a danger signal, and it will be further understood by carefully considering Figs. 4 and 5 that the swing of the stop arm 18 will be limited in both directions so as to prevent the signal from being swung too far after the same has once come into engagement with thetrip lever of the automatic brake mechanism. Of course, it should be understood that the device may be modified as to its detail mechanical construction without departing from the spirit of the invention.

As is illustrated in Fig. 8 the valve engaging blade 22 may carry anelectric or other light, and this valve engaging blade 22 is provided with a red glass plate 23 behind which is placed a light of suitable description in order that the signal may be read in the dark. lt of course should be understood that this inventionmay be applied to the present device without departing from the spirit of the invention.

Having thus described the invention what is claimed as new, is :-n

1. A device of the class described comprising a casing, a shaft carried within said casing, a stop blade carried by said shaft,

said shaft provided with anjintegral collar,-

a sleeve carried by said casing, said collar engaging the upper end of said sleeve and limiting the downward movement of said shaft upon said sleeve, stop lugs carried by said casing, to said shaft andadapted to engage said stop lugs for limiting the swing of said stop arm, and means for rotating said shaft. p

2. A device of the class described comprising a casing, a shaft carried thereby, a stop blade secured to said shaft, stop lugs carried by said casing, a stop arm carried by said a stop arm ydetachably secured shaft and adapted to lengage said stop lugs for limiting the swing of said stop arm, an operating sprocket wheel carried by said shaft and provided with a projecting flange upon the lower face thereof, and a chain passing' around said sprocket wheel and resting upon said flange whereby said chain will be held from falling from saidv sprocket wheel. y

ln testimony whereof I hereunto aflix my signature in presence o-f two witnesses.

ULRICH W. WALTON.

Witnesses I Morir LIGHT'FOOT, S. F. JONES.

,Copies o! this patent :mayl be obtained for ve cents each, by addressing the Commissioner of Patents,

` lfaahingvcony ID. C. 

